We are about to buy a Lofrans Tigres anchor windlass and new chain.
Milvina is in Europe, so it will be 10 mm chain, not American standard

Problem is that there are two 10 mm chain standards, DIN and ISO. Easy enough to get a gypsy for either, but they are NOT compatible

Anybody know which is the more popular and more likely to be available in the Caribbean or the US

Which of the two metric standards will be the better choice, given that we plan to be in the Caribbean in a couple of years, so any further chain we buy would be there. I do not see any metric chain in West marine or Defender.